The forces F1, F2 and F3 with magnitude 2, 3 and 1kN respectively are applied at point K (Figure 1). a) Determine the resultant force of F1, F2 and F3. b) Calculate the moment M, created by the resultant force with respect to the line AC. c) Determine the angle between the resultant force and the line AG, where G is the midpoint of the BC line segment. z (m) F K(0, 0, 4) C(1, 1, 1) y (m) G A(0, -3, 0) x (m) B(2,-2, 0)